Tonic pupil
Tonic Pupil is a term whose meaning is the same as Adie's Pupil.
It is also known as:
- Adie's Tonic Pupil,
- Adie Syndrome and as
- Holmes-Adie's Syndrome, among other names.
Tonic Pupil refers to a neurological condition affecting the pupil of an eye and the autonomic nervous system.
Affected pupils are "dilated", that
is the dark/black central "pupil" is larger than normal,
due to damage to the nerves to the ciliary
muscle (of the eye) and the iris (of the eye).
Tonic Pupils react abnormally poorly to changes in light level.
Tonic Pupils are also characterized by high sensitivity to dilute 0.1% pilocarpine drops - which barely affect normal pupils but cause marked constriction (reduction in size) of Tonic Pupil.
This condition is not life-threatening.
Both eyes may be affected (bilateral) but in most cases only one eye is affected (unilateral).
More about Ophthalmology:
This section includes short definitions
of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list
to the left (but note that this is not a complete/exhaustive list).
Other related pages include
- A diagram of the eye
- Definitions and descriptions of the parts of the eye
- A concise description of the human retina
- Definitions of parts of the retina
- Clinical and surgical procedures re. eyes and human visual system
For further information see also our pages of books about ophthalmology.
The following books may also be of interest:
